Got Homework?
Connect with other students for help. It's a free community.
Here's the question you clicked on:
 0 viewing
bii17
Group Title
A train travels between two stations 1/2 mile apart in a minimum time of 41 sec. If the train accelerates and decelerates at 8 ft/sec^2, starting from the first station and coming to a stop at the second station, what is its maximum speed in mph? How long does it travel at this top speed?
 10 months ago
 10 months ago
bii17 Group Title
A train travels between two stations 1/2 mile apart in a minimum time of 41 sec. If the train accelerates and decelerates at 8 ft/sec^2, starting from the first station and coming to a stop at the second station, what is its maximum speed in mph? How long does it travel at this top speed?
 10 months ago
 10 months ago

This Question is Closed

ParthKohli Group TitleBest ResponseYou've already chosen the best response.0
Let's say that the train takes \(t_0\) time to reach the max. speed \(v_o\). Use the equation \(v_f = v_i + at\). Then you have,\[v_0 = 8t_0\]\[0 = v_0  8(41  t_0)\]
 10 months ago

ParthKohli Group TitleBest ResponseYou've already chosen the best response.0
Two equations... two variables. Solve.
 10 months ago

ParthKohli Group TitleBest ResponseYou've already chosen the best response.0
That is, if I understood your question correctly. The train starts, accelerates at 8 ft/sec^2, reaches the top speed, and decelerates at 8 ft/sec^2?
 10 months ago

ParthKohli Group TitleBest ResponseYou've already chosen the best response.0
If that is so, then the other info is useless.
 10 months ago

bii17 Group TitleBest ResponseYou've already chosen the best response.0
the final answer should be 60mph. but i did't get the same answer ung your two equations
 10 months ago
See more questions >>>
Your question is ready. Sign up for free to start getting answers.
spraguer
(Moderator)
5
→ View Detailed Profile
is replying to Can someone tell me what button the professor is hitting...
23
 Teamwork 19 Teammate
 Problem Solving 19 Hero
 Engagement 19 Mad Hatter
 You have blocked this person.
 ✔ You're a fan Checking fan status...
Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.